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PHOTOS: Powerful, tornado-warned thunderstorms charge through Ontario

From summer heat to sweater weather: Ontario sees a plummet back to spring

Large hail, 90+km/h winds: Parts of Ontario face severe storm chance

The world’s largest landslide caused Mount St. Helens to erupt

How lake breezes shape your weather

The pyrotechnic science behind Victoria Day firework displays

Global fire outbreaks at record high as 'unprecedented' heat looms: Scientists

Photos from space show how the Greenland ice sheet is changing

Infamous disaster scenario can rapidly unfold, study finds

Picking wild garlic? Avoid this dangerous, but common, mistake

A snowball's chance in hell: Nova Scotia ski hill defies nature

Setting fires at Riding Mountain National Park to save endangered grasslands

Could sunshine reduce your dementia risk? Here's what a new study says

Jet stream pushes airliner’s 7,000+ km journey to the limits

Explore this lush, tropical getaway in the Pacific Ocean